package com.itheima.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.common.R;
import com.itheima.entiy.Employee;
import com.itheima.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.apache.ibatis.annotations.Param;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){


        //1.将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper<>();

        wrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(wrapper);

        //如果没有查询到则返回登陆失败结果
        if(emp==null){
            return R.error("登陆失败1");
        }

        //密码比对，如果不一致则返回登陆失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登陆失败2");
        }

        //比对员工账号状态是否处于禁用状态
        if(emp.getStatus()==0){
            return R.error("账号已禁用");
        }

        //登陆成功
        request.getSession().setAttribute("employee",emp.getId());
        return  R.success(emp);


    }


    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    private  R<String> logout(HttpServletRequest request){

        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 员工信息分页查询
     * @param page 当前查询页码
     * @param pageSize 每页展示记录数
     * @param name 员工姓名 - 可选参数
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name = {}",page,pageSize,name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name)
                .or()
                .like(StringUtils.isNotEmpty(name),Employee::getUsername,name);

        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询

        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);


    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> sava(HttpServletRequest request, @RequestBody Employee employee){

        log.info("新增员工，员工信息{}",employee.toString());

        //设置初始密码为123456，进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");


    }

    /**
     * 根据id修改员工信息
     * @param employee
     * 修改员工状态
     * @return
     */
   /* @PutMapping
    public R<String> updateStatus(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return  R.success("该员工账号已禁用/启用");

    }*/

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息");

        Employee employee = employeeService.getById(id);

        if(employee!=null){
            return R.success(employee);

        }
        return R.error("没有查询到对应员工信息");
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
//        Long empId = (Long)request.getSession().getAttribute("employee");
//
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");

    }




















}
